MASTERFUL Meaning of MASTERFUL in English masterful BrE AmE ˈmɑːst ə f ə l § ˈmæst-, -fʊl AmE ˈmæst ə r-▷ masterful|ly ‿i▷ masterful|ness nəs nɪs Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012